The City Government has accelerated the progress of the installation of household connection pipe for sewerage system and improved the water quality of river from the source. In the past 3 years, the penetration rate of the installation of household connection pipe has increased from 6% to 10%, which has increased by about 20,000 households. All river basins of the 7 rivers in the city have been dredged, and “Taoyuan-the Nation's First Coastal Ecological Protection White Paper” has been enacted to protect natural landscapes including Guanxin algal reef, Xucuogang Wetland, etc. The City Government has started the Takekan River Water&Green Recreational Garden Project to develop an area for better access to the nature and environmental education, and the construction of Shanzhuhu Natural Ecological Park has commenced. The City Government saves electricity and promotes green energy, replacing 20,000 mercury street lamp with LED and making good use of the roofs of public sites and ponds to conduct solar energy generation.